Siding Calculator
Calculate siding materials for your exterior project. Accounts for wall area, openings, waste factor, and trim materials.
Professional Siding Calculator
Industry-standard material calculations based on ASTM specifications
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Project Info2
Measurements3
Siding Type4
Accessories5
ResultsProject Information
This determines the waste factor applied to calculations
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Coverage calculations for vinyl, fiber cement, wood, and metal siding with ASTM installation specifications and waste factors.
Read the Siding Materials GuideHow to Use This Calculator
- Measure wall area: Calculate total exterior wall square footage.
- Subtract openings: Deduct area for windows, doors, and garage doors.
- Select siding type: Choose vinyl, fiber cement, wood, or metal.
- Add waste factor: Include 10% waste for cuts and overlaps.
Siding Coverage Standards
Siding is measured in squares (100 sq ft). One square of vinyl siding covers approximately 95-97 sq ft after overlap. Add 10-15% waste.